BirdAnalyst
BBS Route · Maryland · BCR 28

Oldtown Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 107 species recorded across 53 survey years, still active.

107Species RecordedSpecies recordedDistinct species detected on standard-protocol BBS runs here across all years on record — a measure of survey breadth, not a complete checklist.Full methodology →
53Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1970–2024Span
3Observers

Bird Species Found on Maryland Oldtown

Top 40 of 107 species by most recent count. Each links to its species trend.

Species recorded on the Oldtown route.
Recent countThe raw number of individuals recorded on this route in its most recent survey year. A single-route tally, not a trend.Full methodology →TrendPercent change in the route-weighted abundance index between a smoothed baseline window and the most recent one. It tracks direction, not absolute population.Full methodology →Baseline yearThe first year of the smoothed window the trend is measured from. An earlier baseline means a longer record stands behind the number.Full methodology →History
Red-eyed VireoVireonidae772024+213%1972
Scarlet TanagerCardinalidae362024-6%1972
Tufted TitmouseParidae302024+48%1972
Northern CardinalCardinalidae272024+14%1972
Indigo BuntingCardinalidae262024+40%1972
Chipping SparrowPasserellidae222024-28%1972
OvenbirdParulidae222024+176%1973
Black-capped ChickadeeParidae212024-23%1972
Blue-gray GnatcatcherPolioptilidae212024+638%1972
American RedstartParulidae202024+300%1973
Carolina WrenTroglodytidae202024+309%1973
Worm-eating WarblerParulidae182024+409%1972
Eastern Wood-PeweeTyrannidae172024+3%1972
Eastern TowheePasserellidae142024-76%1972
Yellow-throated VireoVireonidae142024+400%1972
American CrowCorvidae132024-73%1972
Hooded WarblerParulidae122024+429%1972
American RobinTurdidae122024-30%1972
Mourning DoveColumbidae112024-9%1972
Red-bellied WoodpeckerPicidae112024+300%1972
Eastern PhoebeTyrannidae112024+100%1972
Acadian FlycatcherTyrannidae112024+357%1973
Pine WarblerParulidae112024+158%1972
White-breasted NuthatchSittidae112024+0%1972
Pileated WoodpeckerPicidae112024+61%1973
American GoldfinchFringillidae92024-5%1972
Wood ThrushTurdidae92024-79%1972
MallardAnatidae91978n/an/a
Cedar WaxwingBombycillidae82024+142%1974
Great Crested FlycatcherTyrannidae72024-50%1972
Brown-headed CowbirdIcteridae72024-42%1972
Common RavenCorvidae72024+100%1980
Field SparrowPasserellidae62024-66%1972
Cerulean WarblerParulidae62024+200%1974
Yellow-billed CuckooCuculidae52024-12%1972
Prairie WarblerParulidae52024+21%1972
Chimney SwiftApodidae42021-40%1976
Blue JayCorvidae42024-39%1972
Wood DuckAnatidae42012-17%1975
Wild TurkeyPhasianidae32024-42%1978

Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22. A route is a sample, not a census.